Tunable All-Optical Microwave Filters Based on Fiber Loop and Chirped Fiber Bragg Gratings

Authors: Chi, Hao; Zhang, Xianmin

Source: International Journal of Infrared and Millimeter Waves, Volume 26, Number 8, August 2005 , pp. 1207-1215(9)

Publisher: Springer

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Abstract:

All-optical microwave filters are important parts of fiber-optic microwave/millimeter wave processing systems. In this paper, two novel passive tunable all-optical microwave filters based on fiber loop and chirped fiber Bragg gratings (CFBGs) are demonstrated, where the frequency response of the both filters can be continuously tuned by adjusting the wavelength of the input light. The required free spectral range (FSR) of the filters can be obtained by carefully controlling the length of fiber loop and the positions of the CFBGs in the fiber loop. Experimental results prove the feasibility of the proposed filtering structures.

Keywords: All-optical microwave filter; fiber delay lines; fiber Bragg gratings (FBGs); microwave photonics; photonic microwave signal processing; fiber-optic microwave/millimeter wave systems

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10762-005-7278-1

Affiliations: 1: Department of Information & Electronic Engineering and the Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou, 310027, China,

Publication date: 2005-08-01